Once there were many Keepers of Lost Things, but now all that’s left are Gertie Milk, her mentor Kolt, and, Robot Rabbit Boy – a bumbling but lovable Artificial Intelligence Forever Friend. Then Gertie learns that the missing Keepers are imprisoned by the Losers and decides to make it her mission to rescue the kidnapped Keepers. But how can she do that when she’s busy returning lost items to keep history on track? Especially when the Losers have an evil plan that puts the entire future of the universe is at stake. Now Gertie, Kolt, and Robot Rabbit Boy must travel through time (and outer space) to save their island home and rescue the Keepers – before the Losers manage to capture them all.